A word from the designer:
Serhiy Grabarchuk is a famous Ukrainian puzzle designer who lives in Uzhgorod. The puzzle depicted on the piece of drawing that he sent me looked like a strange adornment weaved into a "coiffure"design.
If you put a glass carefully onto the completing puzzle, it becomes, indeed, a coaster. Using this when serving drinks to guests will no doubt create stimulating conversation. Theme: "Coiffure".